Multiple Choice
The Salk polio vaccine
A) protects against nervous system and gastrointestinal infection.
B) protects only against gastrointestinal infection.
C) is a subunit vaccine.
D) protects only against nervous system infection.
E) protects against nervous system and gastrointestinal infection AND is a subunit vaccine.
Correct Answer:

Verified
Correct Answer:
Verified
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